update: add caddy network

docker-compose.yml

@@ -8,7 +8,13 @@ services:
     pull_policy: build
     ports:
       - "804:804"
+    networks:
+      - caddy_network
     environment:
       - NODE_ENV=production
       - PORT=804
-    restart: unless-stopped
+    restart: unless-stopped
+
+networks:
+  caddy_network:
+    external: true